Deflectable Inkjet Nozzle for Dynamic Jetting Pitch Adjustment
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Solution Overview
Problem
Current inkjet printing technologies for inorganic light emitting diodes lack the ability to dynamically adjust the jetting pitch, which is essential for varying display resolutions and efficiencies in manufacturing processes.
Innovation Solution
The inkjet printing apparatus incorporates a movable inkjet head with nozzles that can be deflected and controlled by a microelectronic controller, allowing for adjustment of the jetting pitch by altering the position and orientation of the nozzles, enabling flexible adaptation to different display resolutions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed nozzle configuration is used in the inkjet printing apparatus, then the device structure is simple, but the jetting pitch cannot be adjusted for different display resolutions
Solution Approach 1:
The patent implements a movable nozzle structure that can be deflected from its original position using an actuator mechanism. The nozzle is no longer fixed but can dynamically change its position and orientation to achieve different jetting pitches, allowing the same apparatus to adapt to various display resolutions without requiring multiple fixed configurations
Solution Approach 2:
The inkjet printing apparatus is designed with a universal nozzle system that can serve multiple functions by adjusting its position. The same nozzle structure can be configured for different jetting pitches, enabling a single device to handle various display resolution requirements, thereby eliminating the need for multiple specialized nozzles or heads
2Adaptability or versatility
If the nozzle position is fixed, then the manufacturing process is simple and fast, but the display resolution cannot be varied
Solution Approach 1:
The manufacturing process incorporates a dynamically adjustable nozzle that can be positioned at different locations to achieve varying jetting pitches. This dynamic positioning capability allows the same manufacturing system to produce different display resolutions by simply repositioning the nozzle, maintaining process simplicity while enabling resolution variability
Solution Approach 2:
The patent changes the positional parameter of the nozzle from a fixed value to a variable that can be adjusted. By modifying the nozzle's position and orientation parameters through the deflection mechanism, the system can adapt to different display resolution requirements without fundamentally changing the manufacturing process architecture
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution allows for precise control over the jetting pitch, enhancing the manufacturing process by improving display resolution and efficiency in forming inorganic light emitting diode layers, thereby addressing the limitations of existing technologies.
Implementation Method 1
transfer methods using a dielectrophoresis (DEP) methods have been developed
Implementation Method 2
The actuator may control an amount of droplets of the ink discharged from each of the nozzles
Data Source
AI summary
An inkjet printing apparatus comprises an inkjet head disposed above a stage and including nozzles through which ink including bipolar elements is discharged, the bipolar elements each having regions partially doped with different polarities. At least part of the nozzles is deflected from a direction in case that the nozzles are in a deflected state.